Heat-resistance ferritic stainless steel
US9279172B2 · kind B2 · utility
4Cited by
2References
11Claims
0Family size
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Key dates
| Filing date | Mar 5, 2009 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2530/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ferritic stainless steel is excellent in terms of both oxidation resistance and thermal fatigue resistance without adding expensive elements, such as Mo or W. The ferritic stainless steel, contains: C: 0.015 mass % or lower, Si: 1.0 mass % or lower, Mn: 1.0 mass % or lower, P: 0.04 mass % or lower, S: 0.010 mass % or lower, Cr: 16 to 23 mass % or lower, N: 0.015 mass % or lower, Nb: 0.3 to 0.65 mass %, Ti: 0.15 mass % or lower, Mo: 0.1 mass % or lower, W: 0.1 mass % or lower, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.5 mass %, and the balance of Fe and inevitable impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.